Fireman&#39;s helmet



FIG. 1 is a top plan view of a fireman's helmet showing the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view, the right side being a mirror image thereof; and

FIG. 5 is a perspective view thereof. 

The ornamental design for a fireman's helmet, substantially as shown and described. 